Not to be upstaged by its record-breaking rival, Microsoft says it, too, sold some one million units of its Xbox One console worldwide during the new console’s preliminary 24 hours on sale. In other words, scorekeepers, it’s game on.

Microsoft called its 13-market Xbox One launch “the biggest in Xbox history,” but not — take note here — the biggest in history period. I guess we’ll have to turn it over to the judges to figure that one out, and hope it doesn’t end with a recount and someone suing all the crazy way up to the Supreme Court.

In any case, it’s a new record for Microsoft, “surpassing day one Xbox 360 sales.” The company claims its Xbox One is sold out at most places and that it’s “working to replenish stock as fast as possible.”

“We are humbled and grateful for the excitement of Xbox fans around the world,” said Microsoft corporate marketing VP Yusuf Mehdi in a statement. “Seeing thousands of excited fans lined up to get their Xbox One and their love for gaming was truly a special moment for everyone on the Xbox team. We are working hard to create more Xbox One consoles and look forward to fulfilling holiday gift wishes this season.”

Update: As the Motley Fool’s Demitrios Kalogeropoulos points out, the Xbox One launched in 13 markets simultaneously, whereas Sony hits its million-plus figure after launching in just two. Make of that what you will.

(MORE: Watch TIME’s behind the scenes coverage of the Xbox One Launch Event)